航海情報 Cruise information

航海題目 Title

房総半島沖合における河川系水の分布・混合過程に関する研究
Distribution and mixing processes of riverine waters off Boso Peninsula

研究代表者 Principal Investigator

伊藤幸彦 (東京大学・大気海洋研究所)
ITOH, Sachihiko (AORI, The University of Tokyo)

調査概要 Research Summary

1. 曳航観測システムによる陸起源低塩分水塊のマッピング

2. 低塩分水塊の水平攪拌・鉛直混合過程

3. ラジウム同位体分析による陸起源水塊の痕跡推定

4. 屈折率計および溶存有機物ロガー連続分析による絶対密度・CDOMの高解像度分布推定

5. 環境DNA分析による魚類相分布解明

報告書・出版物 Reports and Publication

JAMSTEC航海情報カタログ KS-21-8
Yu, Z., Wong, M.K.S., Inoue, J., Ahmed, S.I., Higuchi, T., Hyodo, S., Itoh, S., Komatsu, K., Saito, H. and Ito, S.I., 2023: Environmental DNA in the Kuroshio reveals environment-dependent distribution of economically important small pelagic fish.. Front. Mar. Sci.
Ahmed, S.I., Z. Yu, T. Higuchi, J. Inoue, M.K.-S. Wong, S. Yoshizawa, S. Itoh, K. Komatsu, Y. Kawaguchi, E. Tsutsumi, Y. Lin, S. Hyodo, J. Morrongiello, and S. Ito, 2025: Fish species detection by environmental DNA metabarcoding by three surface sampling methods. Regional Studies in Marine Science
Ahmed, S.I., Z. Yu, T. Higuchi, J. Inoue, M.K.-S. Wong, X. Wang, Y. Lin, S. Itoh, K. Komatsu, E. Tsutsumi, H. Fukuda, S. Hyodo, J. Morrongiello, E.M. Bendif, and S. Ito, 2026: Patterns in marine surface fish biodiversity and community composition detected by different eDNA metabarcoding sampling methods. Journal of Oceanography
Lin, Y., Z. Yu, S.I. Ahmed, X. Wang, T. Higuchi, I. Yabe, M.K.-S. Wong, S. Itoh, E. Tsutsumi, H. Saito, K. Komatsu, A. Tsuda, Y. Kawaguchi, E. Oka, H. Obata, Y. Minegishi, H. Fukuda, J. Inoue, S. Hyodo, and S. Ito, 2026: Opposite latitudinal biodiversity gradient in the open ocean generated by transition zones: Insights from fish distribution in the Northwest Pacific. Progress in Oceanography